Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach dao » lanh dao
vai cua » dai cua, hai cua, lai cua
chuc va » thuc va, thuc vat
phuc va » phuc vu, thuc va, thuc vat
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach ty
hieu va » lieu va, hieu qua
vang xa » lang xa, mang xa, ang xa
va cau » van cau, va cac, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ly) or (sach dao)) vang xa hoi. hieu va cau ((phuc va) or (chuc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach dao)) vang xa hoi. hieu va cau ((phuc va) OR (chuc va)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach dao)) vang xa hoi. hieu va cau ((phuc va) or (chuc va)) hanh vai cua tre*.